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CALCULATING MACHINE.

APPLICATION FILED JULY 12. 1912.

1 ,273, 1 80. Patented July 23, 1918.

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CALCULATING MACHINE.

APPLICATION FILED JULY 12, 1912.

1,273,180. Patented July 23,1918.

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A. F. POOLE.

CALCULATING MACHINE.

APPLICATION FILED JULY 12. 1912. 1 ,27 3,180. Patented July 23,1918.

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CALCULATING MACHlNE.

APPLICATION FILED JULY 12. 1912.

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A. F. POOLE.

CALCULATING MACHINE.

APPUCATION FILED JULY 12. 1912.

1 ,273, 180. Patented July 23, 1918.

a SHEETS-SHEET sf UNTTED STAIES PATENT OFFICE.

ARTHUR F. POOLE, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS,TO THE WAI-IL COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OFDELAWARE CALCULATING-MACHINE.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed July 12, 1912. Serial No. 709,010.

To all whom it'may concern:

Be it known that I, ARTHUR F. PooLn, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois haveinvented certain new and useful Improvements in Calculating-\laehines,of which the following is a specification.

My invention is a universal correcting mechanism for calculatingmachines. There are now on the market machines which work in conjunctionwith typewriters and are ordinarily called typewriter calculatingmachines; Thegreat majority of those already on the market are providedwith totalizers which are able to calculate totals of numbers printed onthe sheet in vertical or columnar arrangement. There are also somecalculating attachments that beside the above co lumnar totalizers havealso a universal totalizer. The latter may be used to obtain the totalofnumbers printed anywhere on the sheet wiether in columnar arrangementor in horizontal or linear arrangement or even in disorder. For manyforms of account the operator employs only the columnar totalizers, forother forms of account he employs the universal totalizer and for stillother forms of account he employs both the universal totalizer and oneor more columnar totalizers. In most forms of account the columnartotalizers are used for addition mainly, subtraction occurring soinfrequently that the operator manually changes the machine to subtractwhenever subtraction in the columnar totalizer is required. But in manyforms of account the changings of the condition of the universaltotalizer from addition, subtraction or nonoperation to any other one ofthe three just mentioned conditions, occur so frequently that cammechanism has been introduced to accomplish such changings. The aboveare to be found in connection with machines already constructed.

An example of this type of machine will be found in the ma ihinedescribed in the copending application of John C. lVahl, Serial Number702,053, filed June 6, 1912.

Even the very bestof operators some times make mistakes. Thetransposition of numbers. say the writing of 89 instead of 98, is verycommon. Whenever an error has been introduced by the operator it isadvisable to correct same as soon as possible to thus relieve the mindof the operator. It is evident that the error can be eliminated, byreversing the machine and again introducing into it the numberconstituting the error. Any number that was wrongly inserted additivelywould thus be now wrongly inserted again subtractively. The two wouldthere- :tore cancel each other and similarly for subtractive errors.

As long as the calculating machine contained only one or two handlestheoperator had 'no difliculty in so manipulating them as to properlyreverse the machine to thus correct an error. That was when onlycolumnar totalizers were used. In complicated forms of account thereversing of the machine to correct an error ordinarily requires severalmanipulations of several handles. In this the operator is very liable toconfusion. Moreover when the changing of the condition of the universaltotalizer is by cam mechanism and not by hand the operator ordinarilydoes not know what handles to move in order to reverse the mechanism tocorrect an error. i It has therefore been found advisable to introduce acorrecting device which will under all circumstances operate to reversethe calculating machine. This is the object of my invention.

Repeating, the object of my invention is a correcting mechanismoperating in conjunction with the calculating machine, which calculatingmachine is provided with columnar totalizers and a universal totalizer.

Viewed from another standpoint the object of my invention is acorrecting mechanism applicable to calculating machines provided with auniversal totalizer which universal totalizer is adapted to be broughtinto additive, subtractive or nonoperative condition both manually andautomatically.

Another object of my invention is a correcting mechanism applicable to acalculating machine provided with columnar totalizers and a universaltota-lizer, which universal totalizer is adapted to be brought into anadditive, nonoperative or subtractive condition both manually andautomatically.

Another object of my invention is the particular construction ofthereversing mechanism operating in conjunction with the conditiondetermining handle of the calculating machine.

Another object of my invention is the particular construction of themechanism determining the condition of the totalizer, whether saidtotalizer should he cam determined or manually determined and which isthe condition that is determined.

Another object of my invention is the construction of the correctingmechanism particularly in connection with one handle which determineswhether the universal totalizer should have its condition determinedautomatically or manually and with another which determines theparticular additive, subtractive or nonoperative condition of theuniversal totalizer when the first handle determines that the universaltotalizer shall be manually governed, and also in connection with .cammechanism which determines the particular additive, subtractive ornonoperative condition of the universal totalizer when the first handledetermines that said universal totalizer shall be cam governed.

' t is of course understood that the mechanism embodying my inventioncan be widely varied without departing from the principles thereof. Myinvention is thus applicable to many forms of machines but in thedrawings I have illustrated it as applied to the machine now on themarket in connection with the Remington typewriter and described inPatent No. 893,719 issued to John C. Vahl, July 21, 1908. Saidcalculating machine contains a great deal of mechanism which isnecessary in order that it shall function properly as a calculatingmachine but whose particular construction and operation does not need tobe known for the proper understanding of my in vention. Moreover in saidmachine there is such a multiplicity of parts that the introduction ofthem in the drawings'would tend to confuse rather than to clarify theconstruction of my invention. I have therefore left them out.

It will therefore be understood that there is supposed to be present aRemington typewriter with all its necessary parts, and by preferenceprovided also with a tabulator. Such typewriter is shown in the drawingsonly by a piece of its framework. Mounted upon said typewriter is theframework of the calculating machine by which some of the parts of thecalculating machine are supported. Other parts of the calculatingmachine are connected to and travel with the carriage of the typewriter.Keeping the above preliminary remarks in mind, particularly the factthat mechanism essential to the operation of the calculating machine butnot essential to the understanding of this invention has been omitted,reference willnow be made to the drawings.

Of these'Figures 1 and 1 together form a front elevation of themechanism of my invention and parts cotiperating therewith.

Figs. 2 and 2 together similarly form a plan of said mechanism.

Fig. 3 is an elevation while looking at the right side of the machine.

Fig. 4 shows that part of the correcting mechanism which is particularlyassociated with the columnar totalizers. v

Fig. 5 shows the same mechanism as Fig. l, but with the parts in adifi'erent operative position.

Fig. 6 shows the correcting mechanism when the universal totalizer ismanually governed.

Fig. 7 shows the same mechanism when said totalizer is cam governed.

Fig. 8 is an elevation looking at the left side of the machine.

The framing of the typewriter is numbered 1 (Figs. 1 and 1 thecalculating machine is numbered 2. The typewriter is provided with keysoperating the type bars and causing the carriage to advance. Among suchtypewriter keys are the numeral keys. These are suitably connected tothe calculating machine. The depressing of any of said numeral keys setsinto operation a train of mechanism with which said calculating machineis provided and as a result of which, movement is imparted to a piece 3,the sector, to an amount dependent upon the numerical value of thenumeral key depressed. The movement of the sector is transmitted toeither the direct gear 4 or the reverse gear 5 (Fig. 1 Both of thesegears are always in mesh with each other and each of them is providedwith a groove wherein is inserted an end of a lever 6, fulcrumed on theframework at 7 The direct gear 4 is slidably but nonrotatably mountedupon its supporting shaft 8. The reverse gear 5 is rotatably but notslidably mounted upon its shaft 9. When axially moved the constructionjust described compels the two gears to be moved in opposite directions.The location of the sector is such that it meshes with only the rightend of the particular one of said two gears which occupies the positionmost to the right. Normally the direct gear is in the Zone of action ofthe sector and the reverse gear is not. This is the position illustratedin the drawings. The placing of the direct gear out of the Zone ofaction of the sector will advance the reverse gear nearer to said Zoneof action but not yet within it. Any movement imparted to the sector atthis moment will therefore be transmitted to neither of said gears. Bothof them will be inactive. The placing of the shaft 9 still farther tothe right will draw the direct gear still farther away and will intrudethe reverse gear into the zone of action of the sector. The chain ofmechanism just described will therefore The framing of cause the directgear to rotate in one direction when the shaft 9 is in its left ornormal position cause it not to rotate when the shaft is in its middleposition, and cause it to rotate in the opposite direction when theshaft is in its right position. The movement of the direct gear istransmitted to the master gear 10 rigidly fastened to the shaft 8. Themaster gear is the one which operates the various carrying wheels of thetotalize' as the latter pass over it scriazfz'm, and thus by depressingthe numeral keys of the typewriter there is caused the introduction intothe totalizer of the number represented by said numeral key. The abovemechanism is old and is to be found in the machine now on the market. Itis also described in the above cited patent.

As the keys of the typewriter are operated the carriage advances step bystep. Connected thereto is the totalizer bar 11 which serves to supportand carry along therewith various columnar totalizers 12. Saidtotalizers during the operation of the machine are therefore carriedover the master gear to receive the various numbers to be columnarilytotaled.

In one of its forms the calculating machine is provided with a universaltotalizer 12 (Figs. 1 and 2 The latter is mounted somewhat to the rightand lower in order not to interfere with the travel of the totalizer bar11 and columnar totalizers 12. The universal totaliZer 12 is mountedupon a short universal totalizer bar 11 which is supported upon theframing in a manner to be slidable thereon within a limited zone oftravel. There is mechanism provided for the universal totalizer wherebyit may be temporarily connected to such columnar totalizer as is thenpassing over and cooperating with the master gear 10. After saidcolumnar totalizer has been carried beyond the master gear then theuniversal totalizer returns to its preceding position and becomesconnected to the next columnar totalizer. Moreover the colun'martotalizer for many calculations need not contain therein a carryingwheel but might be a dummy totalizer whose only function is to properlymove the universal totalizer. The exact mechanism of the interconnectionbe tween the universal totalizer and the columnar totalizers is not apart of my invention and will therefore not be described. Mechanismdisclosing such a connection is described in Patent- No. 893,717 issuedJuly 21 1908, and others.

The carrying wheels of the universal totalizer are adapted to be movedby the universal totalizer master gear 10. The latter is of the sameconstruction as the columnar master gear 10. It is also provided with acolumnar direct gear at, re

verse gear 5, lever 6, fulcrum T, shaft 8, shaft 9 and sector 3. Allthese parts cooperating with the universal totalizer are similar in sizeand shape to the similar parts cooperating with the columnar totalizersand are operated from the numeral keys of the typewriter in the samemanner by means of parallelogram link connections similar to those shownand described in my copending application Serial Number 700,011, filedJuly 12, 1912. As a result the universal master gear 10 may therefore bemade additive, nonoperative or subtractive by placing the shaft 9 in itsleft, middle or right position respectively. The above also is old andnot part of my invention which will now be entered upon.

Mounted upon the framing 2 of the calculating machine at its left sideis a lever 20, (Fi 1 and Fig. 8) fulcrumed at 21, and pro vided with ahandle 22, whereby it may be de pressed and a spring 23, tending toreturn the lever to its normal position with the handle 22 elevated. Thelever is provided with a hook 24 and another hook 25. These hookscooperate with a pawl shaped lever 26 fulcrumed on the framing at 27 andprovided with a finger piece 28. lVhenever the operator depresses thehandle 22 and releases same then the lever returns to its normalposition. But should the operator desire to lock it in a displacedposition Or in a still further. displaced position then he lifts thepawl lever 26 by means of its finger piece and allows it to hook therewith the hook 24 or the hook 25.

The back of the lever 20 is' connected to the lower end of a link 29rising vertically therefrom (Figs. 4: and 5). The upper end of the linkis connected to the end of an arm extending from the lever 30 andfulcrumed 0n the framing at 31. Said lever 30 is also connected byanother arm to the left end of a link 32 extending to the right. Saidlink by its other end is connected to the lower end of a reverser plate33. The reverser plate in its turn is pivotally mounted upon a stud 3lupon the end of a link 35. The stud is guided in the framing but isfreely movable horizontally. In its upper portion the reverser plate 33is furnished with a cam slot 36 which embraces a pin 37 form ing part ofa lever 38 fulcrumed in the fran'iing at 39 and provided with an armwhich extends from said fulcrum clownward and which with a fork end 10embraces a finger a1 extending to the back from the shaft 9.

The normal position of the parts is clearly shown at the left portion ofFig. 1 and also by the full lines of Fig. 4. Temporarily the pivot 3 1is fixed. By the chain of mechanism described the locating of thehandlein any of its three positions therefore lo cates the reverserplate 33 also in three corresponding positions. The depressing of thehandle causes the movement of the cam slot 36 to the left. The shape ofthe latter is evidently such as to cause the shaft 9 to move to theright. Finally therefore the location of the handle 22 in its highestposition causes the master gear 10 to be additive, the location of thehandle in its middle position causes the master gear to be nonoperative;and the location of the handle in its lowest position causes the mastergear to be subtractive.

The link 35 extends a distance and has its other end fastened to the endof an arm 42'forming part of a correcting lever 43 f ulerumed in theframing at 44 and provided with a finger piece 45 (Figs. 1 1 and 2 2Said finger piece is also provided with mechanism whereby it may belocked in any of its operative positions. The correcting lever 43 isalso furnished with a spring 46 which tends to return it to its normalposition. An examination of the chain of mechanism just described (seeFig. 1) shows 7 that the moving of the correcting finger piece 45 to theleft causes the pivot 34 of the reverser plate to be moved to the right.Moreover this movement remains practically the same in amount no matterwhat the position of the lower portion of said reverser link plate. Theupper portion, namely the cam slot 36, of'said reverser plate istherefore given a movement which in this particular case is alwaysapproximately twice the movement of the pivot 34. This result-s inalways reversing the condition of the master gear 10. This is so becauseif the pin previously occupied its positive normal position, that is theexact middle of the cam slot, it would now occupy its correctingposition at the extreme left and top of the slot, which is a subtractiveposition. If the pin occupied its normal nonactive position at themiddle of the right half of the cam slot it will now occupy the middleof the left half of the cam slot, which is again a nonactive position,And finally if the pin occupied the normal subtractive position at theextreme right of the cam slot it will now occupy the exactcenterthereof,'which is an additive position. Under any and allcircumstances the movement ofthe correcting lever therefore causes thecolumnar master gear 10 to be reversed in condition, assuming that thereverse of a nonaetive condition is still a nonactive condition.

In connection with the universal master mechanism there is provided forshaft 9 of the latter a finger 41, fork end 40, lever 38 fulcrumed at39, pin 37, cam slot 36,

35 pivotally mounted at 34, and reverser plate 33 (Figs. 6 and 7). Butin this case, purely for convenience of construction and not for anytheoretical reason, the link 35 has its other end connected to the plate47 fulcrumed in the framing at 48 and connected by means of a link 49 toanother arm 42 of the correcting lever 43. The moving of the correctingfinger piece 45 to its correcting position therefore causes the pivot 34to move in the same direction as the pivot 34. Moreover said movement isequal in amount.

In connection with the universal totalizer there are mounted upon theframework also a lever 20 fulcrumed at 21 and provided with a handle 22,spring 23, hooks 24 and 25, pawl lever 26 fulcrumed at 27 and providedwith finger piece 28. There are also present link 29, lever 30 fulcrumedat 31. All these parts are similar in size and shape and are similarlymounted to their corresponding parts in the columnar portion. Thefurther mechanism connecting the lever 30 to the reverser plate 33 inthe universal totalizer is different than the mechanism in the columnarportion and this difference is introduced in order to allow saidmechanism to accommodate itself to the conditioning of the universalmechanism by the cams as well as manually. Said mechanism will now bedescribed.

7 As previously mentioned the cams determining the additive, nonactiveor subtractive condition of the universal totalizer are mounted on thecolumnar totalizers 12 (Fig. 1*), They occupy the lower front portion ofsaid totalizers and are numbered 50. Saidcams are of three levels havingtheir surfaces either high, middle or low. Cooperating with the surfacesof said cams is a roller 51 mounted upon the end of an arm 52 rigidlyfastened to a shaft 53 extending to the back, and rotatably mounted inthe framework, and provided at its back end with an arm 54 risingvertically. The latter arm at its upper end is connected to the left endof a link 55 which with its right end is connected to the upper end ofan arm of a lever 56 fulcrumed in the framing at 57 and provided withanother arm extending from itsfulcrum to the right and having its endconnected to the upper end of a link 58 whose lower end is connected tothe end of an arm of lever 59 fulcrumed in the framing at 60 andprovided with an arm 61 rising from its fulcrum vertically. As a resultof the chain of mechanism just described the lecating of roller 51 bythe cams 50 with said roller in its high position will ause the arm 61to occupy a left position, the locating of the roller in its middleposition will cause said arm to occupy a middle position and the lowposition of the roller corresponds to the right position of the arm. Inthe further explanation of the operation of the parts reference will behad to the position of the arm 61.

lviounted upon the framing at the right lowest part of the reverserplate portion of the machine is a lever fulcrumed at 71 and providedwith a finger piece 72 (Figs. 1, 2 and Figs. 6 and 7). Normally thefinger piece occupies an elevated position near an inscription on theframing 'Man (short for manual). The'finger piece can be depressed to bebrought near another inscription Cam. Snapping mechanism is provided toretain the lever in either of said positions. The lever is provided witha right portion 7 3 pivotally connected to a raisable plate 74:. Thelatter is also pivotally connected to a link 75 fulcrumed on the framingat 76, The four pieces, namely the framing the right portion 73, theraisable plate iland the link 75 are so dimensioned that they make aparallelogram. The moving of the finger piece 72 from its one positionto the other therefore causes the raisable plate 74: to be moved up ordown but it retains its angular position constant. The raisable plate 7%is provided with a horizontal slot 77 which embraces a pin 7 S formingpart of a link piece 79. Said link piece is provided with a slot 80embracing a pin 81 fastened in the 8 3. The link piece has also fastenedthereto one end of a link 82whose other end is fastened to an arm 61 andan end of another link 83 whose other end is fastened to av lever 30.

In the position of the parts shown inFig. G the finger piece 72 iselevated. The indicator shows that the universal totalizer is supposedto be under manual control, that is it is supposed to be calculatinglyconditioned by the location of the handle 22 or rather by the locationof the lever 30. It is easily seen to be so since with the plate 7st inits lowered position the pin 81 is close to the pivot of the link piece79 and the link 82. The latter is connected to the lever 30. Anydisplacement of said lever 30 is therefore immediately tlilllSllllf-tEClto the pin 81. The presence of the link 83 produces a slight butthoroughly negligible effect upon the movement of said pin 81. Thepresence of said link 83 may therefore be left out of account. Themechanism in this location of the parts therefore becomes equal to themechanism described in connection with the columnar master gear, whichhas been thoroughly explained.

In Fig. 7 the finger piece 72 is shown in its lower position. The plate7% is now in its elevated position. The link piece 79 is also in itselevated position and as a result thereof it is now the link 83connecting said link piece to the lever 61 which is effective inproducing motion in the pin 81 and not the other link 82. Attention ishere called to the fact that the above links 82 and 83 occupy their leftposition normally, that is additively, their middle position when theyare inactive, and their right position when they are subtractive. Thelocating of the handle 72 in its lowered position therefore brings theuniversal mechanism completely under the control of the lever 61,.thatis of the roller 51, that is of the cams 50 mounted on the columnartotalizer bar. Moreover the correcting mechanism functions properly whenthe universal totalizer is so cam conditioned. Again attention is calledto the fact that the mechanism brings the universal totalizer from anyof its three possible manually determincd conditions to any of its threepossible cam determined conditions without any interference. The manualconditions are determined by the location of the handle :22 only and arenot affected by the cams 50. The cam determined conditions aredetermined completely by the cams 50 and are not affected by the handle22. Moreover the correcting handle serves to reverse and to correct thecolumnar portion independently of the universal portion and vice versa.The

solution is therefore complete and embraces all possible combinations.

Attention is called to the fact that in all the above mechanism there isnot a spring or other yielding member. It is all positive. The reverserplate 33is an aggregate movement plate whose position depends upon theposition of the ti o factors each of which is able to move independentlyof the other. It is therefore not necessary to disconnect one in orderto make the other one of the two factors operative. It is evident thatin theory this is exactly like any other aggregate movement mechanism,such as an epicyclic mechanism which could readily be substitutedtherefor. v I I I am acquainted with the co-pending application of JohnC. lVahl, for improvement in calculating machines, Serial Number629,308, filed May 2, 1911 and do not wish to claim herein any of thestructure disclosed in his application.

In some of the claims I have used the term aggregate motion mechanism.By this I mean a mechanism in which a link or wheel is adapted toreceive motion from two independent sources, the mechanism being sodesigned that the motion of said part or wheel will be proportional tothe algebraic sum (or aggregate) of the motions of the sources. In thepresent application the part 33, F ig. 4:, is adapted to receive motionfrom either the rod 35 or the rod 8'2 and the motion of the slot 36 isthe result of the motions of 35 and The particular piece 33 of theaggregate motion mechanism 1 have shown in this application is sometimescalled a floating lever and I have so referred to it in some of theclaims.

Similarly attention is called to the mechanism bringing the universalportion under the influence of the cams or under the infiu ence of themanual setting. Here also the mechanism is an aggregate movementmechanism. The slotted link as a whole has its position determinedby'the two links to which it is connected.

' For the purpose of the claims it will be convenient to review here thevarious features of the invention above described. There is thereversing mechanism as applied to one master gear and reversing theoperation thereoi be it conditioned for addition, nonaction, orsubtraction. mechanism determining that a master gear shall be camgoverned or manually governed. Moreover when determined as cam governedit is simultaneously governed for addition, nonaction or subtraction.When determined as manually governed it is similarly determined asaddition, nonaction or subtraction. This mechanism might be called thegovernor determinator. There is also the combination mechanism of thegovernor determinator plus the reverser mechanism, both of which havebeen alluded to above.

It is evident that should occasion arise therefor, the reversingmechanism could be applied not only to the two master gears and twototalizers but also to a larger number of them simultaneously. Variousother changes can readily be made in the construction of the mechanismabove described without departing from the principle of my invention.

I claim 1. In a calculating machine the combination of, a totalizer, atotalizer actuating mechanism, a change gear device determining theaction of said actuating mechanism on said totalizer, and a floatinglever determining the position of said change gear 7 device.

2. In a calculating machine the combination of, a set of numeral keys, atotalizer, a conditioning part'movable into one of three positions, inthe first of which it determines that the action of the keys shallproduce addition in the totalizer, in another that the action of thekeys shall produce subtraction in the totalizer, and in the third thatthe action of the keys shall have'no eitect on the totalizer, a handlenormally occupying one position and adapted to be manually located inanother position, said handle in its second position bringing saidconditioning part into, the reversing position of the one previouslyoccupied thereby, and means eifective to move said conditioning partindependently of the position of said handle. 7

3. In a calculating machine the combination of: 1, a conditioning partlocatable in any of three positions in the first of which it conditionsthe machine to add, in the second of which it conditions the machine tosub'stract, and in the third of which it There is the r conditions themachine to not calculate; 2, a handle manually locatable in any of threepositions to thereby locate part 1, in the one of its threecorresponding positions; and 8, a reversing handle normally occupyingone position and adapted when moved into its other position to reversethe location of part 1'.

4. In a calculatingmachine the combination of, a floating leverlocatable in any of three positions, in the first of which itconditionsthe machine to add, in another to not calculate, and in athird to subtract, a handle connected to one point of said floatinglever, and a second handle connected to a second point of said floatinglever.

5. In a calculating machine the combination of: 1, a conditioning piecelocatable in any of three positions to determine that the machine shallrespectively add, subtract or not calculate; 2, an aggregate movementpiece determining the position of the conditioning piece 1=; 3, asetting handle operative upon the aggregate movement piece; and a, areversing handle also operative upon the aggregate movement piece, whereby the machine may be reversed without disturbing the setting of thehandle 3.

6. In a calculating machine the combination of: 1, a conditioning piecelocatable into any of three positions to thus determine the condition ofthe machine to add, subtract or to not calculate; 2, a cam mechanismoperative upon part 1, to locate it in any of its three said positions,the cam mechanism being shaped to reverse the location of part 1 for aconstant movement of said cam; 3, machanism for locating the cam in adetermined position; and 4:, mechanism for moving said cam through aconstant additional distance to thereby reverse the location of part 1.

7. In a calculating machine the combination of: 1, a conditioning partlocatable in any of three positions to thus determine the machine toadd, not calculate or to subtract; 2, a condition part locating memberadapted to be located in any of three normal positions to thereby locatepart 1 in corresponding positions, the condition part locating memberbeing also displaceable a constant additional amount whereby it may bebrought from any one of its three normal ositions to the corres vendinone of three special positions, any normal position and not specialposition of part 2 producing reverse eifects upon part 1.

8. In a calculating machine, the combination of: a totalizer: a set ofkeys a number inserting mechanism operable by said keys and adapted toinsert numbers in said 'totalizer; a conditioning part to determine theaction of said keys on said totalizer; a locating member for saidconditioning part; a handle adapted to be set in a plurality ofpositions connected to said locating member; a second handle operativelyconnected to said locating member and adapted to displace a part of saidlocating member a constant amount, thus reversing the action of saidkeys on said totalizer whereby errors may be corrected. 7

9. In a calculating machine the combination of: 1, a conditioning partlocatable in any of three positions to thereby condition the machine toadd, to not calculate or to subtrac 2, floating lever operating uponpart 1 to determine its location said floating lever being locatableinto any of three normal positions to thereby locate part 1, and alsobeing adapted to be advanced an additional movement to be thus broughtinto a special location to thereby locate part 1 into difierent ones ofits three positions; 3, a handle for locating the floating lever intoany of its'three normal positions; and l, a reversing handle for givingto said floating lever said additional movement to thereby reverse themachine.

10. In a calculating machine the combination of: 1, a conditioning partlocatable in any of three positions to condition the machine to add, tonot calculate or to subtract; 2, a plate camming part adapted to bebrought into three positions; 3, a link forming a pivot for said plateand operating to locate it in any of its three normal positions; and 4,another link also connected to said plate and displacing it about saidpivot to thereby locate said plate in a corresponding special positionfor each of its three normal positions.

11. In a calculating machine the combi nation of: 1 a conditioningmember locatable in any of three positions to condition the machinetoadd, to not calculate or to subtract; 2, a setting handle adapted to bebrought into any of three positions to normally locate member 1 in aproper correspon ding position 3, a reversing handle and 1, aggregatemovement mechanism connectring the above said three parts, 1, 2, and 3.

12. In a calculating machine the combination of: 1, a conditioningmechanism for one totalizer; 2, a conditioning mechanism for anothert-otalizer; and 3, reversing mechanism operating upon both conditioningmechanisms simultaneously.

13. In a calculating machine the combination of; 1, a totalizer; 2,conditioning means for said totalizer to condition it to add, subtractor to not calculate: 3, another totalizer; 1," another conditioningmeans to condition the second totalizer to add, subtract or to notcalculate independently of the conditioning of the first totalizer; and5, a reversing handle operating on both conditioning meanssimultaneouslyfor reversing the condition of' both totalizers simultaneously.

1 1. In a calculating machine, the combination of a master mechanism, ahandle to condition said master mechanism, (1) to add, (2) to subtract,(3) or not to calculate, a second master mechanism, a handle therefor tocondition the second master mechanism (1) to add, to subtract, (3) ornotto calculate, a floating lever connected to each of said conditioninghandles, and a reversing handle operative on both of said floatinglevers whereby the condition of both master mechanisms may besimultaneously reversed Without disturbing the setting or the twopreviously recited handles.

15. In a calculating machine, the combination of, a totalizer,conditioning mechanism for conditioning the totalizer to add, subtract,or not to calculate, another conditioning mechanism for simultaneouslyconditioning the totalizer to add, subtract or not to calculate, and aconditioning governing mechanism to determine which of the twoconditioning mechanisms shall temporarily condition the machine.

16. In a calculating machine the combination of: 1, a cam mechanismconditioning the machine to add, subtract or to not calculate: 2, ahandle mechanism conditioning the machine to add. subtract or to notcalculate; and 3, a conditioning governing mecnanism to determine whichof the two conditioning mechanisms, the cam or the manual, shalltemporarily condition the machine.

17. In a calculating machine the combination of 1, a conditioningmechanism to condition the machine to add, subtract or to not calculate;2, further conditioning mechanism to condition the machine to add.subtract or to not calculate; 3, conditioning governing mechanism todetermine which of the two conditioning mechanisms shall temporarilycondition the machine; and 4. link mechanism connecting the conditioningmechanism 1 and conditioning mechanism 2 and the condition governingmechanism 18. In a calculating machine-the combination of: 1, a cammechanism c nditioning the machine to add, subtract or to not calculate;2, further conditioning mechanism conditioning the machine to add,subtract or to not calculate; ,3, condition governing mechanism todetermine which of the 1W0 conditioning mechanisms shall temporarilycondition the machine; and 4, link mechanism connecting the conditioningmechanism 1. and conditioning mechanism 9 and the condition governingmechanism 3.

19. In a calculating n'iachine the combination of: 1. a conditioningmechanism to condition the machine to add; subtract or to not calculate;2, another conditioning mechanism to condition the machine to add,subtract or to not calculate; 3, a link having one end thereof fulcrumedto a portion of conditionlocation determined partly by;

ing mechanism 1; 4, anotherlink having one end thereof fulcruined to aPOl'tlOltOf conditioiiin mechanism 2' a com sound link 13011116. linkthe condition governing mechaiiisiii 6 being adapted to locate the conpoundlink 5, iii-either of two positions in .one of Which the link 2becomes eii ective upon part 7, and link 3 ineffective upon same, and inthe other position the link 3 becomes effective upon part 1 and link 2iiieliective upon same; V

20. In a calculating machinethe conibination oi: 1, a cam mechanism tocondition the machine to add, subtract or to not calculate; 2, anotherconditioning mechanism to condition the machine to add, subtract or tonot calculate; 3, a link having one end thereof fulcrumed to a portionof conditioning mechanism 1; 4, another link having one end thereoitulcrumed to a portion of conditioning mechanism 2; 5, a compound linktulcrumed at iioncoincident pivots to the free ends of links 3 and 4,and having its location determined partly by; 6, a conditioninggoverning mechanism; 7, a condition determining part cooperating Withthecompound link 5 the condition governing mechanism 6 being adapted tolocate the coinupon part '7. and link pound link 5, in either of twopositions in one of which the link 2 becomes eiiective 3 ineffectiveupon position the link 3 1 and link 2 inbecomes effective upon parteffective upon same.

21. In a calculating machine the combination or": 1, a totalizer; 2, cammechanism for conditioningthe same to add, subtract same, and in theother 7 or to not calculate; 3, manual settable mechanism forconditioning the totalizer to add, subtract or to not calculate; 4, aconditioning governing device to determine which of the two conditioningdevices 2 and 3, shall temporarily condition the totalizer; 5, aresecond conditioning mechanism and of tiie versing mechanism normallyoccupying one position-and p'laceable to a reversing positionfto therebyreverse the tot-alizer; the reversing of the totalizer thus alwaystaking place upon the movement of the reversing mechanism, independentlyof the position of the first conditioning mechanism and of the iconditioning governing mechanism. 7

r 22. In a calculating machine the combina- :{tllt'OlDfltlO meansoperative on said floating lever, and an additional handle alsooperatadd,subtract or to notcalculate; 3, a handle governing'handle todetermine Which of the forconditioning the totalizer to add, sub-'anism2 or the handle 3, shall temporarily tion of: 1 a totalizer; 2,

condition the machine; 5; a reversing handle normally occupying oneposition and man ually pl'aceable into a reversing positioirto reversethe condition of the 'totalizer irre-' spective of its normalconditioning; and 6, mechanism connecting the abovelisted parts 1, 2,3,4, and 5.

23. In a: calculating machine the combinacam determining the conditionof the totalizer to mechanism for r add, subtract or to not calculate;3, a handle for conditioning the totalizer to add, subtract or to notcalculate; 4, a conditioning governing handle to determine which of thetvvoconditioning mechanisms, the cam mechanism 2 or the handle 3, shalltemporarily condition the machine; 5, a reversing handle I normallyoccupying one position andmantwo conditioning mechanisms, the cam mechanism 2 or the handle 3, shall temporarily condition the machine; 5, areversing handle normally occin ying one position and man uallyplaceable into a reversing position to reverse the condition ofthetotaliZer i-rrespective of its normal conditioning; and 6, a cam andlink 'liiecllalilSiii connecting the above listed parts, 1, 2, 3, 4, and5.

' 25. Ina calculating'machine the combination of, a totalizer, -atotalizer actuating mechanism, a change gear device determin- 7 ing theaction of said actuating mechanism on said totalizer, a floating leverdetermining the position-o1"- said change gear'device, manual meansoperative on the floating lever, automatic means operative on saidfloat-' ing lever, and an additional manual means also'operating'on thefloating lever tethereby determine its position.

26. In a calculating machine the combination of, a totalizer, atotalizer actuating mechanism, a change gear device determining theaction of said actuating mechanism on said totalizer, a floating leverdetermining the position of said change 'gear device,

tract or to not calculate; 4, a conditioning two'conditioningmechanisms, the cam mecha handle operative on the floating lever,

mine its position. i

27. Ina calculating machine the combination of, atraveling carriage, atotalizer, a totalizer actuating mechanism, a change gear mg on thefloating lever to thereby deterdevice determining the action of saidactuating mechanism on said totalizer, a floating lever determining theposition of said change gear device, a handle operative on the floatinglever, automatic means operated by said traveling carriage and operativeon said floating lever, and an additional handle also operating on thefloating lever to thereby determine its position.

28. In a calculating machine the combination of, a totalizer, atotalizer actuating mechanism, a change gear device determining theaction of said actuating mechanism on said tota-lizer, a floating leverdetermining the position of said change gear device, a second totalizer,totalizer actuating mechanism, change gear device and floating lever anda manual means operating simultaneously on both the above recitedfloating levers, whereby the operation of the operating mechanisms ontheir respective totalizers may be reversed irrespective of the positionof the change gear devices.

29. In a calculating machine, the combination of, a totalizer, atotalizer actuating mechanism, a change gear device determining theaction of said actuating mechanism on said totalizer, a floating leverdetermining the position of said change gear device, a handle operativeon one point of said floating lever, a cam controlled device operativeon said floating lever, a handle whereby it may be determined Whethersaid first recited handle or said cam controlled device operates on saidfloating lever, and a second handle controlling the position of anotherpoint in said floating lever.

30. In a calculating machine the combina tion of, a change gear device,a floating lever, a second change gear device, a second floating lever,and a bar connecting similar points in said floating levers.

31. In a calculating machine the combination of, a change gear device, afloating lever, a second change gear device, a second floating lever, abar connecting similar points in said floating levers, and a handlel(iontrolling the position of said connecting In Witness whereof, I havehereunto WVitnesses JNO. H. NELsoN, J12, T. G. FRANKEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

